November 22, 2015 11:23am ESTNovember 22, 2015 11:04am ESTThe Bears linebacker was seen "warming up" without a shirt — in sub-30 degree Chicago temperatures, mind you — before Sunday's game against the Broncos.Lamaar Houston(Twitter)

Either Lamarr Houston's days playing high school football in Colorado prepared his body for freezing temperatures, or Lamaar Houston is out of his mind.

The Bears linebacker was found warming up (wink) at Soldier Field a few hours before his team's game against the Broncos ... wearing no shirt and a pair of flip-flops. Never mind the sub-30 degree temperatures in Chicago on Sunday morning.